I'm having problems UI-enabling a site upgraded from 2009 to 2011 SP1. We have the UI working, and Session Preview automatically publishing / updating, however when preview updates none of the CSS than is published from Tridion is rendered.
Using developer tools, I see every CSS file requested returns either a 500 response or a "resource interpreted as text/html" warning. This only happens when Session Preview is updated, or more specifically the page is being rendered in "PreviewDynamic" mode.
I've done the following:
- Ensures that text/css mime-type is configured correctly on the session preview webservice.
- Tried referencing external CSS (renders OK).
- Tried copying a published CSS file to another location and referencing that one instead (renders OK).
The closest issue I can find is - Blocked CSS files for Session Preview only in Internet Explorer. I've tried all the steps here without any luck, also it happens in every browser (I'm mostly testing using Chrome).
Can anyone suggest anything? I'm about half an hour away from creating a "preview" sub-folder on the staging website and referencing files in there when in session preview :)